Thanks! Especially to the guy who posted the sound file. I was wondering what this random, intermittent noise was that roughly followed engine rpm to 1200-1500 rpm then went away. The sound file is exactly what I'm hearing--I just wish they would have revved the truck as well as letting it idle.
Anyway, this means I don't have to unload the ton of dirt and sod (bound for the dump) and take the truck to the dealership. This is good.
Blaine
2002 Crew Cab Short Bed 2500 HD 4x4, Duramax, Allison, Amsoil, Magnaflow 4\" x 20\" muffler, Juice,; Fold-a-Cover, nerf bars, Husky mats, Weather Tech windo vent shades; bed mat, tailgate protector, bulkhead protector, wheel-well protectors; mud flaps, Leveling kit, Frontier front end replacement